Learn how important the holes in your nose are in this wacky and informative book. We breathe and smell through the holes in our noses and they come in lots of different sizes. Grandad's nose holes are much bigger than mine or my sisters'. But it is not just humans who have holes in their noses. Lots of animals have holes in their noses too, and dolphins have their holes on the top of their head. Bet you don't know how bogies are made and why you sneeze!